JavaScript Tutorial in Hindi #69 Form Handling | Get Input Values & Enable/Disable Button

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In this video, we dive deep into JavaScript Form Handling and learn how to:

✅ Get input field values on button click
✅ Disable button by default
✅ Enable button only when all fields have values
✅ Use addEventListener for input tracking
✅ Apply real-world form validation logic
✅ Important JavaScript interview questions

This is a must-know concept for frontend developers and is frequently asked in interviews.

💡 We’ll build a real example using:

HTML form
Input fields (Name, Email, Password)
JavaScript DOM manipulation
Event listeners

Interview Questions Covered:
How to validate multiple input fields in JavaScript?
How to enable/disable button dynamically?
How to get input values using DOM?
Difference between click and input events?
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